package com.alipay.util;

import com.alipay.config.AlipayConfig;
import com.alipay.sign.MD5;
import com.alipay.util.httpClient.HttpProtocolHandler;
import com.alipay.util.httpClient.HttpRequest;
import com.alipay.util.httpClient.HttpResponse;
import com.alipay.util.httpClient.HttpResultType;
import org.apache.commons.httpclient.NameValuePair;
import org.dom4j.Document;
import org.dom4j.DocumentException;
import org.dom4j.Node;
import org.dom4j.io.SAXReader;

import java.io.IOException;
import java.net.MalformedURLException;
import java.net.URL;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

/* *
 *类名：AlipaySubmit
 *功能：支付宝各接口请求提交类
 *详细：构造支付宝各接口表单HTML文本，获取远程HTTP数据
 *版本：3.3
 *日期：2012-08-13
 *说明：
 *以下代码只是为了方便商户测试而提供的样例代码，商户可以根据自己网站的需要，按照技术文档编写,并非一定要使用该代码。
 *该代码仅供学习和研究支付宝接口使用，只是提供一个参考。
 */

public class AlipaySubmit {

    /**
     * 支付宝提供给商户的服务接入网关URL(新)
     */
    private static final String ALIPAY_GATEWAY_NEW = "https://mapi.alipay.com/gateway.do?";

    /**
     * 生成签名结果
     *
     * @param sPara 要签名的数组
     * @return 签名结果字符串
     */
    public static String buildRequestMysign(Map<String, String> sPara) {
        String prestr = AlipayCore.createLinkString(sPara); // 把数组所有元素，按照“参数=参数值”的模式用“&”字符拼接成字符串
        String mysign = "";
        if (AlipayConfig.sign_type.equals("MD5")) {
            mysign = MD5.sign(prestr, AlipayConfig.key,
                    AlipayConfig.input_charset);
        }
        return mysign;
    }

    /**
     * 生成要请求给支付宝的参数数组
     *
     * @param sParaTemp 请求前的参数数组
     * @return 要请求的参数数组
     */
    private static Map<String, String> buildRequestPara(
            Map<String, String> sParaTemp) {
        // 除去数组中的空值和签名参数
        Map<String, String> sPara = AlipayCore.paraFilter(sParaTemp);
        // 生成签名结果
        String mysign = buildRequestMysign(sPara);

        // 签名结果与签名方式加入请求提交参数组中
        sPara.put("sign", mysign);
        sPara.put("sign_type", AlipayConfig.sign_type);

        return sPara;
    }

    /**
     * 建立请求，以表单HTML形式构造（默认）
     *
     * @param sParaTemp     请求参数数组
     * @param strMethod     提交方式。两个值可选：post、get
     * @param strButtonName 确认按钮显示文字
     * @return 提交表单HTML文本
     */
    public static String buildRequest(Map<String, String> sParaTemp,
                                      String strMethod, String strButtonName) {
        // 待请求参数数组
        Map<String, String> sPara = buildRequestPara(sParaTemp);
        List<String> keys = new ArrayList<String>(sPara.keySet());

        StringBuffer sbHtml = new StringBuffer();

        sbHtml.append("<form id=\"alipaysubmit\" name=\"alipaysubmit\" action=\""
                + ALIPAY_GATEWAY_NEW
                + "_input_charset="
                + AlipayConfig.input_charset
                + "\" method=\""
                + strMethod
                + "\">");

        for (int i = 0; i < keys.size(); i++) {
            String name = (String) keys.get(i);
            String value = (String) sPara.get(name);

            sbHtml.append("<input type=\"hidden\" name=\"" + name
                    + "\" value=\"" + value + "\"/>");
        }

        // submit按钮控件请不要含有name属性
        sbHtml.append("<input type=\"submit\" value=\"" + strButtonName
                + "\" style=\"display:none;\"></form>");
        sbHtml.append("<script>document.forms['alipaysubmit'].submit();</script>");

        return sbHtml.toString();
    }

    /**
     * 建立请求，以表单HTML形式构造，带文件上传功能
     *
     * @param sParaTemp       请求参数数组
     * @param strMethod       提交方式。两个值可选：post、get
     * @param strButtonName   确认按钮显示文字
     * @param strParaFileName 文件上传的参数名
     * @return 提交表单HTML文本
     */
    public static String buildRequest(Map<String, String> sParaTemp,
                                      String strMethod, String strButtonName, String strParaFileName) {
        // 待请求参数数组
        Map<String, String> sPara = buildRequestPara(sParaTemp);
        List<String> keys = new ArrayList<String>(sPara.keySet());

        StringBuffer sbHtml = new StringBuffer();

        sbHtml.append("<form id=\"alipaysubmit\" name=\"alipaysubmit\"  enctype=\"multipart/form-data\" action=\""
                + ALIPAY_GATEWAY_NEW
                + "_input_charset="
                + AlipayConfig.input_charset
                + "\" method=\""
                + strMethod
                + "\">");

        for (int i = 0; i < keys.size(); i++) {
            String name = (String) keys.get(i);
            String value = (String) sPara.get(name);

            sbHtml.append("<input type=\"hidden\" name=\"" + name
                    + "\" value=\"" + value + "\"/>");
        }

        sbHtml.append("<input type=\"file\" name=\"" + strParaFileName
                + "\" />");

        // submit按钮控件请不要含有name属性
        sbHtml.append("<input type=\"submit\" value=\"" + strButtonName
                + "\" style=\"display:none;\"></form>");

        return sbHtml.toString();
    }

    /**
     * 建立请求，以模拟远程HTTP的POST请求方式构造并获取支付宝的处理结果
     * 如果接口中没有上传文件参数，那么strParaFileName与strFilePath设置为空值 如：buildRequest("",
     * "",sParaTemp)
     *
     * @param strParaFileName 文件类型的参数名
     * @param strFilePath     文件路径
     * @param sParaTemp       请求参数数组
     * @return 支付宝处理结果
     * @throws Exception
     */
    public static String buildRequest(String strParaFileName,
                                      String strFilePath, Map<String, String> sParaTemp) throws Exception {
        // 待请求参数数组
        Map<String, String> sPara = buildRequestPara(sParaTemp);

        HttpProtocolHandler httpProtocolHandler = HttpProtocolHandler
                .getInstance();

        HttpRequest request = new HttpRequest(HttpResultType.BYTES);
        // 设置编码集
        request.setCharset(AlipayConfig.input_charset);

        request.setParameters(generatNameValuePair(sPara));
        request.setUrl(ALIPAY_GATEWAY_NEW + "_input_charset="
                + AlipayConfig.input_charset);

        HttpResponse response = httpProtocolHandler.execute(request,
                strParaFileName, strFilePath);
        if (response == null) {
            return null;
        }

        String strResult = response.getStringResult();

        return strResult;
    }

    /**
     * 发送get请求到远程服务器，支持https连接。
     *
     * @param url
     * @param queryString
     * @return
     * @throws Exception
     */
    public static String sendGetRequest(String url, String queryString)
            throws Exception {

        HttpProtocolHandler httpProtocolHandler = HttpProtocolHandler
                .getInstance();

        HttpRequest request = new HttpRequest(HttpResultType.BYTES);
        // 设置编码集
        request.setCharset(AlipayConfig.input_charset);

        request.setMethod(HttpRequest.METHOD_GET);
        request.setQueryString(queryString);
        request.setUrl(url);

        HttpResponse response = httpProtocolHandler.execute(request, "", "");
        if (response == null) {
            return null;
        }

        String strResult = response.getStringResult();

        return strResult;
    }

    /**
     * 发送一个post请求。可以绕过https的校验。
     *
     * @param url
     * @param method
     * @param sPara
     * @return
     * @throws Exception
     */
    public static String sendPostRequest(String url, Map<String, String> sPara)
            throws Exception {

        HttpProtocolHandler httpProtocolHandler = HttpProtocolHandler
                .getInstance();

        HttpRequest request = new HttpRequest(HttpResultType.BYTES);
        // 设置编码集
        request.setCharset(AlipayConfig.input_charset);

        request.setMethod(HttpRequest.METHOD_POST);
        request.setParameters(generatNameValuePair(sPara));
        request.setUrl(url);

        HttpResponse response = httpProtocolHandler.execute(request, "", "");
        if (response == null) {
            return null;
        }

        String strResult = response.getStringResult();

        return strResult;
    }

    /**
     * MAP类型数组转换成NameValuePair类型
     *
     * @param properties MAP类型数组
     * @return NameValuePair类型数组
     */
    private static NameValuePair[] generatNameValuePair(
            Map<String, String> properties) {
        NameValuePair[] nameValuePair = new NameValuePair[properties.size()];
        int i = 0;
        for (Map.Entry<String, String> entry : properties.entrySet()) {
            nameValuePair[i++] = new NameValuePair(entry.getKey(),
                    entry.getValue());
        }

        return nameValuePair;
    }

    /**
     * 用于防钓鱼，调用接口query_timestamp来获取时间戳的处理函数 注意：远程解析XML出错，与服务器是否支持SSL等配置有关
     *
     * @return 时间戳字符串
     * @throws IOException
     * @throws DocumentException
     * @throws MalformedURLException
     */
    public static String query_timestamp() throws MalformedURLException,
            DocumentException, IOException {

        // 构造访问query_timestamp接口的URL串
        String strUrl = ALIPAY_GATEWAY_NEW + "service=query_timestamp&partner="
                + AlipayConfig.partner + "&_input_charset"
                + AlipayConfig.input_charset;
        StringBuffer result = new StringBuffer();

        SAXReader reader = new SAXReader();
        Document doc = reader.read(new URL(strUrl).openStream());

        List<Node> nodeList = doc.selectNodes("//alipay/*");

        for (Node node : nodeList) {
            // 截取部分不需要解析的信息
            if (node.getName().equals("is_success")
                    && node.getText().equals("T")) {
                // 判断是否有成功标示
                List<Node> nodeList1 = doc
                        .selectNodes("//response/timestamp/*");
                for (Node node1 : nodeList1) {
                    result.append(node1.getText());
                }
            }
        }

        return result.toString();
    }

    public static void main(String[] args) throws Exception {
        String respose = sendGetRequest(
                "https://pay.allscore.com/orderQuery.htm",
                "terminalId=00180062&inputCharset=UTF-8&service=orderQuery&merchantId=888110000180062&outOrderId=201411050946596033&sign=13bc59f84501b65b39876c26de311b80");

        // 待请求参数数组
        Map<String, String> sPara = new HashMap<>();
        sPara.put("terminalId", "00180062");
        sPara.put("inputCharset", "UTF-8");
        sPara.put("service", "orderQuery");
        sPara.put("merchantId", "888110000180062");
        sPara.put("outOrderId", "201411050946596033");
        sPara.put("sign", "13bc59f84501b65b39876c26de311b80");
        String respose1 = sendPostRequest(
                "https://pay.allscore.com/orderQuery.htm", sPara);

        System.out.println(respose);
        System.out.println(respose1);
    }
}
